As used by the Ministry of Defence! Protector 19mm ultimate uncroppable hardened boron steel chain (select length below), plus Squire Stronghold SS65CS-XLN padlock (manufactured specifically to fit the 19mm chain). All Sold Secure Motorcycle Gold or higher. The lock is usually supplied with the higher-security R1 restricted key profile (except when matching a previously-supplied alternative profile lock via the Keyed-Alike option or when upgraded to the ultra-security NW4 cylinder).

The chain is 6.3kg/metre; the padlock is another 1kg. The chain is supplied with usually bronze colour sleeving, and the chain itself is finished with either zinc plating or a black finish.

Please note the lock deliberately only fits a single link of the chain. Please click for guidance on how to fit the lock to the chain and some useful extra tricks.

Price and weight given are for the package including a 2.0m long chain - Please select alternative lengths below and the price displayed will be adjusted automatically.

The Protector 19mm chain has the following link dimensions (nominal): 138 x 63-71mm outside; 100 x 25-33mm inside, throughout its length (an elongated end link is not required). It is constructed from 19mm diameter bar. The smallest rectangular hole it will fit through is about 75 x 44mm, but that would be a tight fit and a little more space will make it easier to feed through. All but the end links are surrounded with a protective fabric sleeve (again, to protect your bike/other valuables; not to protect the chain!). The sleeve is usually a bronze colour (adding about 4mm maximum to the width noted above).

Click for more technical info on the Protector range of security chains.

The following video gives an overview of the Protector 19mm chain (opens in a new window)

Noose chains are not available for the Protector 19mm because they become so unwieldy.

The next video gives a quick visual tour of the whole Protector range of chains, from the ultimate Protector Titan chains, through to the Protector 11mm (opens in a new window)

And this video shows how to fit the lock to the chain (with a non-Noose chain) (opens in a new window)